Caption: The Duke and Duchess of Cambridge have already been called 'work-shy' before the latest cancellation
For the past four years, Kate, 34, has taken on the duty, usually performed by a female member of the Royal Family since Queen Alexandra began the tradition in 1901.
The Queen Mother did it for many years. Princess Anne took up the honour until Kate began in 2012, seemingly continuing the female tradition.
But it is understood that this year, the future Queen wanted to stay at home at Anmer Hall in Norfolk with her two children, Prince George, 2, and 10-month-old Princess Charlotte. Click link for full post from EXPRESS.